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在森林生态系统的植物芽中量化的度,使用阴离子交换色谱和四极ICP-MS

David Uhlig¹, Tatiana Goldberg¹, Daniel A Frick¹

¹Earth Surface Geochemistry GFZ German Research Centre for Geosciences Telegrafenberg Potsdam 14473 Germany.

Analytical science advances

|May 8, 2024

概括

这项研究引入了一种分析植物中的 (Be) 的新方法,揭示了自然基线度. 研究结果表明,在植物吸收过程中受到歧视,这表明它是如此.

科学领域:

环境科学环境科学
分析化学分析化学
植物生物学植物生物学

背景情况:

(Be) 呈现出矛盾的效应:高毒性,但潜在的植物生长刺激.
了解生物体中的甲代谢由于低度和分析挑战而受到限制.
通过ICP-MS分析植物中的Be是很困难的,因为复杂的矩阵和低的Be丰度.

研究的目的:

开发和验证一种新的分析方法,用于精确地确定植物材料中的Be度.
为了确定自然基线,在来自不同生态系统的各种植物物种中确定Be度.
调查植物中与土壤生物可用性相关的Be吸收和歧视.

主要方法:

使用阴离子交换染色学从矩阵元素中分离Be的定量分离.
使用七种参考材料在不同的植物矩阵中验证方法.
在来自温带和热带森林的树木,灌木,灌木和草样本中测量Be度.

主要成果:

建立了一种具有16%可重现性 (RSD) 的新方法,用于植物材料中的Be分析.
在植物器官中测量的Be度在0.01至63ng/g之间.
作为潜在的生物指标,提出了52 ng/g的天然基线Be度 (非木质组织的第95百分位数).

结论:

开发的方法可以在复杂的植物矩阵中进行可靠的Be量化.
确定的基线Be水平可以作为环境污染监测的参考.
植物对Be的吸收进行歧视,这表明它是一个非必不可少的元素.

关键词:

生物指标生物指标歧视是一种歧视.矩阵效应是一种矩阵效应.没有污染的生态系统.毒性的毒性毒性的毒性

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